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How to pass macro definition from “make” command line arguments (-D) to C source code?
... and make does not allow this. You could use "CFLAGS := $(CFLAGS) -Wall", or "CFLAGS += -Wall", but those won't work either because an assignment on the command line has a higher precedence. You could use "override CFLAGS += -Wall", but generally we recommend you just choose different variables in...
How do I call Objective-C code from Swift?
...ses in Swift
If you have an existing class that you'd like to use, perform Step 2 and then skip to Step 5. (For some cases, I had to add an explicit #import <Foundation/Foundation.h to an older Objective-C File.)
Step 1: Add Objective-C Implementation -- .m
Add a .m file to your class, and...
How do I find the duplicates in a list and create another list with them?
...et(a). To print duplicates, something like:
a = [1,2,3,2,1,5,6,5,5,5]
import collections
print([item for item, count in collections.Counter(a).items() if count > 1])
## [1, 2, 5]
Note that Counter is not particularly efficient (timings) and probably overkill here. set will perform better. Th...
Add single element to array in numpy
...array which can be the old array with the appended element.
I think it's more normal to use the proper method for adding an element:
a = numpy.append(a, a[0])
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How to measure elapsed time in Python?
... think I'm using the timeit module wrong, but the docs are just confusing for me.
35 Answers
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What's onCreate(Bundle savedInstanceState)
...an be passed back to onCreate if the activity needs to be recreated (e.g., orientation change) so that you don't lose this prior information. If no data was supplied, savedInstanceState is null.
... you
should use the onPause() method to write any persistent data (such as
user edits) to stor...
How to parse XML in Bash?
...his much editing should be done to someone else, and comments don't allow formatting, so...
rdom () { local IFS=\> ; read -d \< E C ;}
Let's call that "read_dom" instead of "rdom", space it out a bit and use longer variables:
read_dom () {
local IFS=\>
read -d \< ENTITY CONTE...
How to resize an image with OpenCV2.0 and Python2.6
...Python2.6 to show resized images. I used and adopted this example but unfortunately, this code is for OpenCV2.1 and does not seem to be working on 2.0. Here my code:
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Why can I change value of a constant in javascript
...now that ES6 is not standardized yet, but a lot of browsers currently support const keyword in JS.
7 Answers
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How to Customize the time format for Python logging?
I am new to Python's logging package and plan to use it for my project. I would like to customize the time format to my taste. Here is a short code I copied from a tutorial:
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